Patent · US Active

Epitrochoidal vacuum pump

US10871161B2 · kind B2 · utility

0Cited by

60References

11Claims

0Family size

Assignee

Stackpole International Engineered Products, Ltd. · CA

Inventors

Ralph Valkenberg · Stolberg, DE
Luke BOUWMEESTER · Aachen, DE

Key dates

Filing date	Apr 6, 2018
Grant date	Dec 22, 2020
Priority date	—
Expiry date	Feb 27, 2039

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04C2250/20
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An epitrochoidal vacuum pump includes a housing having a chamber, a rotor rotatably received within the internal space of the chamber, and a drive shaft configured to rotate the rotor eccentrically about an axis within the chamber in an epitrochoidal manner. An externally toothed guide sprocket meshes with and guides movement of a guide gear of the rotor as it is driven by the drive shaft. A chamber inlet draws air under negative pressure into the housing, and an outlet is provided to expulse air under positive pressure from the housing. Further, a fluid inlet is provided to input lubricant along the drive shaft and into the internal space of the chamber. The fluid inlet is communicated by channel(s) in an interior of the housing. The lubricant is drawn into the housing via a pressure differential.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.